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27027000018 = 23211953125617
BaseRepresentation
bin11001001010111011…
…110100101011010010
32120202120001212002200
4121022323310223102
5420322403000033
620225510224030
71644516465264
oct311273645322
976676055080
1027027000018
111050a045157
1252a3355016
132719475205
14144566db34
15a82b1a013
hex64aef4ad2

27027000018 has 24 divisors (see below), whose sum is σ = 58563865308. Its totient is φ = 9008174592.

The previous prime is 27026999963. The next prime is 27027000023. The reversal of 27027000018 is 81000072072.

It can be written as a sum of positive squares in 2 ways, for example, as 27008621649 + 18378369 = 164343^2 + 4287^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27026999955 and 27027000000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152346 + ... + 277962.

Almost surely, 227027000018 is an apocalyptic number.

27027000018 is an abundant number, since it is smaller than the sum of its proper divisors (31536865290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27027000018 is a wasteful number, since it uses less digits than its factorization.

27027000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137578 (or 137575 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The spelling of 27027000018 in words is "twenty-seven billion, twenty-seven million, eighteen", and thus it is an aban number and an uban number.

Divisors: 1 2 3 6 9 18 11953 23906 35859 71718 107577 125617 215154 251234 376851 753702 1130553 2261106 1501500001 3003000002 4504500003 9009000006 13513500009 27027000018